Lafond, C., Welch, B., & Vine, S. (2001). English for negotiating. Oxford (New York): Oxford University Press.
Trích dẫn kiểu ChicagoLafond, Charles, Birgit Welch, và Sheila Vine. English for Negotiating. Oxford (New York): Oxford University Press, 2001.
MLA citiranjeLafond, Charles, Birgit Welch, và Sheila Vine. English for Negotiating. Oxford (New York): Oxford University Press, 2001.
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